<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        do {
            var result = prompt("来了输入密码")

        } while (result !== 'yes') {
            alert("对了")
        }






    </script>

</body>

</html>